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Q1. CORRECT TEXT
Configure the system synchronous as 172.24.40.10.
Answer: Graphical Interfaces:
System-->Administration-->Date & Time
OR
# system-config-date
Q2. CORRECT TEXT
Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.
Answer: # cp /etc/fstab /var/tmp/
# chgrp admin /var/tmp/fstab
# setfacl -m u:user1:rwx /var/tmp/fstab
# setfacl -m u:user2:--- /var/tmp/fstab
# ls -l
-rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab
Q3. CORRECT TEXT
Find the files owned by harry, and copy it to catalog: /opt/dir
Answer: # cd /opt/
# mkdir dir
# find / -user harry -exec cp -rfp {} /opt/dir/ ;
Q4. CORRECT TEXT
Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.
Answer: # cp /etc/fstab /var/tmp/
# chgrp admin /var/tmp/fstab
# setfacl -m u:user1:rwx /var/tmp/fstab
# setfacl -m u:user2:--- /var/tmp/fstab
# ls -l
-rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab
Q5. CORRECT TEXT
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
Answer: # useradd -G admin user2
# useradd -G admin user3
# passwd user2
redhat
# passwd user3
redhat
Q6. CORRECT TEXT
Create a user named alex, and the user id should be 1234, and the password should be alex111.
Answer: # useradd -u 1234 alex
# passwd alex
alex111
alex111
OR
echo alex111|passwd -stdin alex
Q7. CORRECT TEXT
Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.)
Answer: # vgdisplay
(Check the capacity of vg, if the capacity is not enough, need to create pv , vgextend , lvextend)
# lvdisplay (Check lv)
# lvextend -L +110M /dev/vg2/lv2
# resize2fs /dev/vg2/lv2
mount -a
(Verify)
------------------------------------------------------------------------------- (Decrease lvm)
# umount /media
# fsck -f /dev/vg2/lv2
# resize2fs -f /dev/vg2/lv2 100M
# lvreduce -L 100M /dev/vg2/lv2
# mount -a
# lvdisplay (Verify)
OR
# e2fsck -f /dev/vg1/lvm02
# resize2fs -f /dev/vg1/lvm02
# mount /dev/vg1/lvm01 /mnt
# lvreduce -L 1G -n /dev/vg1/lvm02
# lvdisplay (Verify)
Q8. CORRECT TEXT
Configure a task: plan to run echo hello command at 14:23 every day.
Answer: # which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
Q9. CORRECT TEXT
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
Answer: # useradd -G admin user2
# useradd -G admin user3
# passwd user2
redhat
# passwd user3
redhat
Q10. CORRECT TEXT
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
Answer: # useradd -G admin user2
# useradd -G admin user3
# passwd user2
redhat
# passwd user3
redhat